NetComm NP642 Network Card User Manual
Contents
1. One Installation CD including Utility Software and User Guide If any item is found missing or damaged please contact your local reseller for replacement NP642 IEEE 802 11g PCI Adapter 8 YML785 Rev1 MAIL NP642 LED Indicators LED Indicator Description Power PWR The PWR indicator lights green to indicate that it is receiving power from the PCI slot If the PWR indicator light is off it is not receiving power ACT Activity The ACT indicator blinks green while the Wireless PCI Card is transmitting data NP642 IEEE 802 11g PCI Adapter 9 YML785 Rev1 Melton HARDWARE INSTALLATION PCI Card Installation Instructions 1 2 10 Shut down the computer unplug the power cord and remove the chassis cover Insert the contact edge of the Wireless PCI Card into the available PCI Bus Master Expansion slot Press the card firmly into the connector so that the card s contacts are fully seated in the PCI slot connector j em Install the bracket screw and secure the card to the computer chassis Replace the computer s cover Switch the computer power on Windows will display a Found New Hardware dialog box Click Cancel to dismiss and proceed with installation of the driver from the CD ROM as described on Page 11 after attaching the antenna NP642 IEEE 802 11g PCI Adapter YML785 Revi MIL Connecting the Antenna Before continuing with the Software Installation section you will nee2. NP642 IEEE 802 11g PCI Adapter 19 YML785 Rev1 MALUM 20 Define Certificate Select a Certificate zi Server Domain Name Login Name _ _ Chose a Cettificate zl Apply j Cancel Select the certificate that you wish to use and enter the server name and login name this refers to RADIUS Server technology which is generally not in use in the home environment check with your Network Administrator if you are required to enter this in order to log on to a secure network If WPA PSK is selected click the configuration button You will then be prompted with the following pop up window Detine WPA PSK Enie your WPA Passphrase The minimum length ie 8 characters p VEL eun NP642 IEEE 802 11g PCI Adapter YML785 Rev1 ee 2 7 m Please enter a key If you are joining an existing network ask the Administrator for the key If you are setting up the network create a key any combination of letters and numbers up to 32 characters with no spaces Auth Mode There are three modes available to choose from Open Authentication the sender and receiver do not share a secret Key for communication Instead each party generates its own key pairs and asks the other party to accept it The key is regenerated when the connection is established every time Shared Authentication the sender and receiver shares the common key for data communication and the key is us
3. backward compatible with 802 11b which means that the two standards are able to communicate albeit at the lower 11 Mbps rate of the 11b standard The NP642 can communicate with both kinds of device at their maximum rate and with other turbo charged devices at the much higher rate of 108Mbps Wireless Security Terms The Advanced Features of the NP642 include the ability to select from several types of Wireless Security WEP WEP stands for Wired Equivalent Privacy Introduced with 802 11b WEP uses encryption to protect data confidentiality by way of pre shared keys passwords or pass phrases that are entered at both ends Superseded by WPA and 802 111 but still in use NP642 IEEE 802 11g PCI Adapter 5 YML785 Rev1 MIL RADIUS TM WPA stands for Wi Fi Protected Access authorizes and identifies users based on a secret key that changes automatically at a pre defined interval This is called TKIP Temporal Key Integrity Protocol to change the temporal key every 10 000 packets unit of data Keys can either be pre shared or established by a RADIUS Server RADIUS is part of 802 111 security this is a wireless standard which is only concerned with wireless security standards Authentication is based around a secure server with a challenge and response method of interaction which verifies the identity of the client wishing to connect to the network If you wish to connect to a RADIUS server ask the Network Administr
4. must be identical for each client and node in the wireless network Give your network a name which you will remember but which does not obviously identify it to the outside world Wireless Mode There are two types available for selection e Infrastructure to establish wireless communication with the LAN and other wireless clients through the use of Access Points 16 NP642 IEEE 802 11g PCI Adapter YML785 Rev1 Melkoni e Ad Hoc to establish peer to peer wireless communication directly with other wireless client devices such as other computers with wireless cards Ad Hoc Band There are three bands available for selection 11B 11G and 11G Turbo Choice depends on the type of wireless equipment you wish to connect to Check the documentation of the associated equipment to verify details Channel The channel value that the PCI card will operate in Australian Users should select the Channel Range 1 13 and all stations on the WLAN need to be on the same channel if they are to communicate Tx Rate Select the data rate for data transmission Power Mode There are 3 modes to choose from e Continuous Access Mode default the PCI card is constantly operating with full power and it consumes the most power e Maximum Power Save the PCI card consumes the least power and only operates when there is wireless network activity e Power Save the PCI card consumes a moderate level of power NP642 IEEE 802 11g PCI A
5. 3 The Install Shield Wizard screen will appear Click Next to continue 4 The installation program will help you setup the Wireless PCI utility Windows XP has its own Wireless Utility You can either use the Windows XP utility or the provided utility 5 Once the Wireless PCI Card is installed you will find a new icon on the Windows task bar The colour ofthe icon represents the strength of the wireless signal 12 NP642 IEEE 802 11g PCI Adapter YML785 Revi NEILOMM If the Icon is completely Green you have excellent coverage and performance If the icon is yellow the signal strength has a fair coverage and performance d If the icon has no colour signal strength is poor NP642 IEEE 802 11g PCI Adapter 13 YML785 Rev1 MALUM USING THE WIRELESS UTILITY l Link Information Launch the utility program by double clicking the utility icon in the Windows task bar The following window 1s displayed after launching the Utility program Linkinfo 408Mbps Wireless LAN Adapter Configuration Utility Q9 Configuration Status Associated BSSID 00 0D 86 EB E8 08 SSID default Frequency 2437 MHz Advan Wireless Mode Infrsstructure Encryption WEP Disable Site Survey ind Y Channel 6 Rescan About Link Quality Signal Strength Link Quality 735 Signal Strength 100 Data Rate Receive D Kbps Tronsmit 0 kops Field Description Status Shows the BSSID or Mac
6. Antena dirette iden eiri ii rident iss niece eni Re a 11 SOFTWARE INSTAPLLATION 1 2 perte ce reet eee d Una sun nep xev nest s erxDe e e FRE dE de 12 Windows 98se ME 2000 XP Utility and Driver Installation 12 USING THE WIRELESS UTILITY 1 ina nnus ntonhnb rero na RR rentre Rena 14 Te ink IMO Stl ON sai seseswassees eoe Eee A COD n tse em eirwsa aera E YEAENS 14 II Configuration sis sieescscsneicad ceu teen na xus n sa aru e Eonenni aP AS GEESS 16 TII Advanced uico isses pav cecsweassan nehic ances ONE Ra RA FEE CEMeR tOpDOr Ker REN RS Sane EIE 19 IN Site SUN EY UTEM 22 IGI GC 24 APPENDIX AS GloSSaly sisudecivisn etii tento eta xeu te suis s RE be UU Dua SR PAE E 25 APPENDIX B Registration and Warranty Information sees 32 Contact InfortmatlOln iua ssec tenenti nrasane ari KERA ni ESN 32 Copyright InformatiOl iio rrn rasakna E ER CERE ARR see aaa Ein 32 CUSEOMEN INFOFMAL OM sassacaccnccdeneetadcninidindsadaaanunadddarmuerdal cia Pa RET RG Redde 33 Product Warranty ues ait acco sten esos axaxu o nr RE aa naa eiue ERR EE 34 Limitations OF Warranty x 2inondene desees uds neaetekiratu n hind si re Dati Deere RR 35 NP642 IEEE 802 11g PCI Adapter 3 YML785 Rev1 MALUM INTRODUCTION Congratulations on your purchase of the NP642 108Mbps IEEE 802 11g Wireless PCI Card This manual is designed to help familiarise users with the product and offer
7. Melton Broadband Solutions User Guide Malim Caution The NetComm NP642 must be installed and operated in accordance with the instructions provided in this Quick Start Guide Damage caused by incorrect or careless installation is not covered by warranty Static Electricity Computers are very sensitive to static electricity which may be discharged by the user when the internal circuitry is touched Ensure that you have discharged any static prior to touching the computer s PCI slots and to removing the NetComm NP642 from its static bag by touching an earthed object first This can be the computer s Power Supply provided the power is switched off at the wall but the power cord is connected to the power socket static will be discharged through the power cord s earth connection 2 NP642 IEEE 802 11g PCI Adapter YML785 Rev1 MAIL Contents INTRODUCTION err 4 Wireless Terminology ironiaa eea neinit cut nes muera Pre aed 5 System REQUIFEMENES ccscc crceccrectentadnendgongehonasiesaaated enik eaaa 7 GETTING TO KNOW YOUR INPG4 2 i ireen tuac rich ene genau pt pite uice gt Ra ve dx 8 Package ContentS crunn neid nein cena rasa Fe A aaia A Ele sodas a ed e 8 NP642 LED TIndiCatOls iiiter irrita eere tbe rer ute ct Fees sima na anaa Rin Ee Ed 9 HARDWARE INSTALLATION 5 222 rta thea ERR ER rere ax ni pee DUbUBRR DER RENE RIEN RE 10 PCI Card Installation InsbFBCEIODS ues ierat natnra tuere YR qa 10 Corinecting the
8. address of the adaptor which can be used to identify it on the wireless network SSID Shows current SSID which must be the same for the all wireless devices in order for communication to be established Frequency Shows the current frequency used for the wireless network 14 NP642 IEEE 802 11g PCI Adapter YML785 Rev1 Meibom Wireless Mode Shows the current wireless mode used for wireless communication Encryption Shows the current encryption mode used in the wireless network TxRate Shows the current data rate used for transmitting Channel Shows the current communication channel Link Quality Shows the link quality of the NP642 Wireless PCI card with the Access Point when operating under Infrastructure mode Signal Strength Shows the strength of the wireless signal between the NP642 Wireless PCI card and the Access Point Data Rate Shows the statistics of the data transfer rate The calculation is based on the number of packets transmitted and received NP642 IEEE 802 11g PCI Adapter 15 YML785 Rev1 Malim II Configuration The configuration page enables you to set the basic parameters for your connection unk info 108MDp5 Wireless LAN Adapter Configuration Utllty Q9 i Advanced Wireless Mode Site Survey Adho Baud About Chal Power Mode Preamble wu a Field Description SSID Service Set Identifier which is a unique name shared among all clients and nodes in a wireless network The SSID
9. all it will create the overhead during the transmission A device that interconnects networks with different incompatible communication protocols NP642 IEEE 802 11g PCI Adapter YML785 Revi HEX IEEE Infrastructure ISM Band MAC Address Multicasting Multiple Bridge MALUM Hexadecimal HEX consists of numbers from 0 9 and letters from A F The Institute of Electrical and Electronics Engineers which is the largest technical professional society that promotes the development and application of electrotechnology and allied Sciences for the benefit of humanity the advancement of the profession The IEEE fosters the development of standards that often become national and international standards An infrastructure network is a wireless network or other small network in which the wireless network devices are made a part of the network through the Access Point which connects them to the rest of the network he FCC and their counterparts outside of the U S have set aside bandwidth for unlicensed use in the ISM Industrial Scientific and Medical band Spectrum in the vicinity of 2 4GHz in particular is being made available worldwide Media Access Control Address is a unique hex number assigned by the manufacturer to any Ethernet networking device such as a network adapter that allows the network to identify it at the hardware level Sending data to a group of nodes instead of a single destination O
10. ast destination addresses time stamp Delivery Traffic Indicator Maps and the Traffic Indicator Message TIM Bit A binary digit which is either 0 or 1 for value is the smallest unit for data Bridge An internetworking function that incorporates the lowest 2 layers of the OSI network protocol model Browser An application program that enables one to read the content and interact in the World Wide Web or Intranet BSS BSS stands for Basic Service Set It is an Access Point and all the LAN PCs that associated with it Channel The bandwidth which wireless Radio operates is divided into several segments which we call them Channels AP and the client stations that it associated work in one of the channels CSMA CA In local area networking this is the CSMA technique that combines slotted time division multiplexing with carrier sense multiple access collision detection CSMA CD to avoid having collisions occur a second time This works best if the time allocated is short compared to packet length and if the number of situations is small 26 NP642 IEEE 802 11g PCI Adapter YML785 Revi CSMA CD DHCP DSSS Dynamic IP Address Melton Carrier Sense Multiple Access Collision Detection which is a LAN access method used in Ethernet When a device wants to gain access to the network it checks to see if the network is quiet senses the carrier If it is not it waits a random amount of time before retrying If
11. ator for details RADIUS servers are not usually used as part of home networks NP642 IEEE 802 11g PCI Adapter YML785 Revi Malim System Requirements Desktop computer with available 32bit PCI slot Windows 98SE ME 2000 XP 32Mb of memory and a 300MHz processor e 20Mb spare disk storage CD ROM Drive Caution The NetComm NP642 must be installed and operated in accordance with the instructions provided in this Quick Start Guide Damage caused by incorrect or careless installation is not covered by warranty Static Electricity Computers are very sensitive to static electricity which may be discharged by the user when the internal circuitry is touched Ensure that you have discharged any static prior to touching the computer s PCI slots and to removing the NetComm NP642 from its static bag by touching an earthed object first This can be the computer s Power Supply provided the power is switched off at the wall but the power cord is connected to the power socket static will be discharged through the power cord s earth connection NP642 IEEE 802 11g PCI Adapter 7 YML785 Rev1 MALUM GETTING TO KNOW YOUR NP642 This chapter provides unpacking and setup information for the NP642 Wireless PCI Card Package Contents Open the box of the Wireless PCI Card and carefully unpack it The box should contain the following items One 108Mbps 802 11g Wireless PCI Card with removable antenna
12. d to connect the antenna 1 The antenna has a retaining nut which must be screwed into the connector on the back of the card Place the screw retaining nut over the antenna connection on the rear of the NB642 and turn it clockwise Screw retaining nut clockwise Bend over the antenna antenna connection to a 90 angle Note Do not over tighten the attaching nut but do make sure that you have screwed it all the way to its end 2 Adjust the antenna to a 90 angle Note Please note that you may have to rotate the complete antenna assembly to do this and have the antenna pointing vertically NP642 IEEE 802 11g PCI Adapter 11 YML785 Rev1 MAIL SOFTWARE INSTALLATION This section will guide you through the driver and utility installation procedure for the NP642 Wireless PCI Card Windows 98se ME 2000 XP Utility and Driver Installation 1 Insert the Driver and Utility CD ROM into the CD ROM Drive The driver and util ity setup menu should start up and install the driver Depending on your operating system you may need to install the software manually Go to your Windows start menu and select Run Type D Utility Setup exe in the dialog box where D is the letter of your CD ROM drive and click OK 2 If you need to install the driver manually refer your Windows Operating System OS to the following CD Rom directory path DADriver Windows OS gt net52 11 inf where D is the letter of your CD ROM drive
13. dapter 17 YML785 Revi Mion __ Preamble Select Long Preamble or Short amp Long Preamble type Leave as default unless advised otherwise by your Network Administrator Support Band There are three functions for you to select including 11B 11G and eXtended Range The default setting is 11B 11G and eXtended Range enabled which is interoperable with both 11B and 11G devices and provides a connectivity range of 500m Note You must select at least 11B or 11G to support your wireless connection NP642 IEEE 802 11g PCI Adapter YML785 Rev1 Malim Ill Advanced In the Advanced page you can configure advanced settings for the NP642 wireless PCI Card Link Info 408Mbps Wireless LAN Adapter Configuration Utility x Configuration Encryption Disable zl eng Auth Mode o amp li Advanced DefaultKey Network Key Key Length Site Survey 1 posu 2 pus d s 3 64 bits F 4 64 bits Default Key LI uH Key Format HEX x re Field Description Encryption There are four options available Disable WEP Enable WEP WPA and WPA PSK The default setting is set to Disable Enable and Disable refer to WEP data encryption feature If Enable is selected you will be required to select the Authentication mode from the drop down list If WPA is selected configuration is enabled Select the configuration button You will then be prompted with the following pop up window
14. ed for extended length of time Auto requires communication to be established and automatically use the proper authentication mode The following will only be activated to allow for configuration when Encryption is enabled Default Key Select one of the 4 keys to use Network Key Choose the encryption either in HEX or ASCII formats and enter the password in the blank space Key Length Select 64 or 128 bits as the length of the keys Key Format ASCII or HEX NP642 IEEE 802 11g PCI Adapter 21 YML785 Rev1 Malim IV Site Survey This page allows you to enable the site survey function which scans for available wireless networks wireless clients amp access points and establishes a wireless communication with one Link Info 108Mbps Wireless LAN Adapter Configuration Utility Available Network __ BSSABSSID Q 00 0D 88 EB 28 88 default No Advanced 4 00 0F 3D 39 D1 CO FAE AP Yes Configuration 00 0D 88 A8 2D 98 624G810Jade No 00 0D 88 CO FA 47 raymond ttt No 00 0D 88 99 9B B4 GST AP Yes Profile Field Description Available Network Displays the wireless networks wireless clients and Access Points that are in your signal range Select any one of them to establish communications by simply double clicking or by clicking on the Connect button Click the Refresh button to start scanning for available networks again 22 NP642 IEEE 802 11g PCI Adapter YML785 Rev1 CT Pro
15. file You can create and manage profiles for Home offices or public areas Double Click on one of the created profiles The settings will adapt to the configuration such as SSID channel and WEP settings saved by that particular profile Remove To remove the selected profile Properties To view and change settings Add To add a profile You will be prompted with the following popup screen You can enter the necessary information required for accessing Access Points or Wireless Router NP642 IEEE 802 11g PCI Adapter 23 YML785 Rev1 Malim V About This page displays some information about the NP642 Wireless PCI Card It contains the Driver amp Utility Version as well as the MAC address This feature is useful when you need to identify utility and driver versions as updates become available Link Info 108Mbps Wireless LAN Adapter Configuration Utlity x Configuration Advanced Site Survey TOT 2E 1608 1290 24 NP642 IEEE 802 11g PCI Adapter YML785 Rev1 APPENDIX A Access Point Ad Hoc AP Client ASCII Authentication Type Backbone MALUI Glossary An internetworking device that seamlessly connects wired and wireless networks An independent wireless LAN network formed by a group of computers each with a network adapter One of the additional AP operating modes offered by a 54Mbps Access Point which allows the Access Point to act as an Ethernet to Wireles
16. ied or attempted to be repaired or modified other than by a qualified person at a service centre authorised by NetComm and The serial number has been defaced or altered in any way or if the serial number plate has been removed NP642 IEEE 802 11g PCI Adapter YML785 Revi MAIL Limitations of Warranty The Trade Practices Act 1974 and corresponding State and Territory Fair Trading Acts or legalisation of another Government the relevant acts in certain circumstances imply mandatory conditions and warranties which cannot be excluded This warranty is in addition to and not in replacement for such conditions and warranties To the extent permitted by the Relevant Acts in relation to your product and any other materials provided with the product the Goods the liability of NetComm under the Relevant Acts is limited at the option of NetComm to Replacement of the Goods or Repair of the Goods or Payment of the cost of replacing the Goods or Payment of the cost of having the Goods repaired NP642 IEEE 802 11g PCI Adapter 35 YML785 Rev1 NETCOMM LIMITED ABN 85 002 490 486 PO Box 1200 Lane Cove NSW 2066 Australia P 02 9424 2070 F 02 9424 2010 Broadband Solutions E sales netcomm com au W www netcomm com au
17. ne of the additional AP operating modes offered by 54Mbps Access Point which allows a group of APs that consists of two or more APs to connect two or more Ethernet networks or Ethernet enabled clients together The way that multiple bridge setups is based on the topology of Ad Hoc mode NP642 IEEE 802 11g PCI Adapter 29 YML785 Rev1 MALUM Node Packet PLCP PPDU Preamble PSDU Roaming RTS RTS Threshold SSID 30 A network junction or connection point typically a computer or workstation A unit of data routed between an origin and a destination in a network Physical layer convergence protocol PLCP protocol data unit The preamble is a sequence of bits transmitted at 1Mbps that synchronises wireless transmission within the network The Short Preamble and header may be used to minimize overhead and thus maximize the network data throughput However the Short Preamble is supported only by the IEEE 802 11b High Rate standard and not by the original IEEE 802 11standard meaning that stations using Short Preamble cannot communicate with stations implementing the original version of the protocol PLCP service data unit ALAN mobile user moves around an ESS and enjoys a continuous connection to an Infrastructure network Request To Send An RS 232 signal sent from the transmitting station to the receiving station requesting permission to transmit Transmitters contending for the medium may not be a
18. of transporting product to and from NetComm s nominated premises is your responsibility and NetComm does not have any liability or responsibility under this warranty where any cost loss injury or damage of any kind whether direct indirect consequential incidental or otherwise arises out of events beyond NetComm s reasonable control This includes but is not limited to acts of God war riot embargoes acts of civil or military authorities fire floods electricity outages lightning power surges or shortages of materials or labour The customer is responsible for the security of their computer and network at all times Security features may be disabled within the factory default settings NetComm recommends that you enable these features to enhance your security The warranty is automatically voided if 1 2 34 You or someone else use the product or attempts to use it other than as specified by NetComm The fault or defect in your product is the result of a voltage surge subjected to the product either by the way of power supply or communication line whether caused by thunderstorm activity or any other cause s The fault is the result of accidental damage or damage in transit including but not limited to liquid spillage Your product has been used for any purposes other than that for which it is sold or in any way other than in strict accordance with the user manual supplied Your product has been repaired or modif
19. on ESS ESSID Ethernet Fragmentation Fragmentation Threshold Gateway 28 A security method that uses a specific algorithm to alter the data transmitted thus prevent others from knowing the information transmitted ESS stands for Extended Service Set More than one BSS is configured to become Extended Service Set LAN mobile users can roam between different BSSs in an ESS The unique identifier that identifies the ESS In infrastructure association the stations use the same ESSID as AP s to get connected A popular local area data communications network originally developed by Xerox Corp that accepts transmission from computers and terminals Ethernet operates on a 10 100 Mbps base transmission rate using a shielded coaxial cable or over shielded twisted pair telephone wire When transmitting a packet over a network medium sometimes the packet is broken into several segments if the size of packet exceeds that allowed by the network medium The Fragmentation Threshold defines the number of bytes used for the fragmentation boundary for directed messages The purpose of Fragmentation Threshold is to increase the transfer reliability thru cutting a MAC Service Data Unit MSDU into several MAC Protocol Data Units MPDU in smaller size The RF transmission can not allow to transmit too big frame size due to the heavy interference caused by the big size of transmission frame But if the frame size is too sm
20. s Bridge thus a LAN or a single computer station can join a wireless ESS network through it American Standard Code for Information Interchange ASCII is one of the two formats that you can use for entering the values for WEP key It represents English letters as numbers from 0 to 127 Indication of an authentication algorithm which can be supported by the Access Point 1 Open System Open System authentication is the simplest of the available authentication algorithms Essentially it is a null authentication algorithm Any station that requests authentication with this algorithm may become authenticated if 802 11 Authentication Type at the recipient station is set to Open System authentication 2 Shared Key Shared Key authentication supports authentication of stations as either a member of those who knows a shared secret key or a member of those who does not The core infrastructure of a network which transports information from one central location to another where the information is unloaded into a local system NP642 IEEE 802 11g PCI Adapter 25 YML785 Rev1 MAIL Bandwidth The transmission capacity of a device which is calculated by how much data the device can transmit in a fixed amount of time expressed in bits per second bps Beacon A beacon is a packet broadcast by the Access Point to keep the network synchronized Included in a beacon are information such as wireless LAN service area the AP address the Broadc
21. s detailed operational and installation instructions so please keep it for future reference With the NP642 Wireless IEEE 802 11g PCI Card a computer can communicate with the Network wirelessly User friendly utility software is bundled with the NP642 providing configuration monitoring and diagnostic options The NP642 provides data transfer rates of up to 108 Mbps which is 10 times faster than most existing Wi Fi wireless networks Designed to handle bandwidth intensive applications and multimedia content the NP642 eliminates the need for unsightly ethernet cables while providing fast and secure network transfer rates The NP642 has the most advanced security features available today with 128 bit WEP encryption and WPA security The Wireless PCI Card configuration is easy to configure for peer to peer networks suitable for a small number of users or for full infrastructure networks that allow broad area roaming 4 NP642 IEEE 802 11g PCI Adapter YML785 Revi MILI Wireless Terminology Wireless Standards 802 11 802 11b and 802 11g all refer to a series of standards which govern a common method of creating wireless local area networks WLANS 802 11b and 11g are the most common WLAN types with 11g being the later and faster of the two standards with a maximum transmission rate of 54Mbps The NP642 is faster again as it is built around a processor which turbo charges transmission rates up to 108Mbps 802 11g is
22. the network is quiet and two devices access the line at exactly the same time their signals collide When the collision is detected they both back off and wait a random amount of time before retrying Dynamic Host Configuration Protocol which is a protocol that lets network administrators manage and allocate Internet Protocol IP addresses in a network Every computer has to have an IP address in order to communicate with each other in a TCP IP based infrastructure network Without DHCP each computer must be entered in manually the IP address DHCP enables the network administrators to assign the IP from a central location and each computer receives an IP address upon plugged with the Ethernet cable everywhere on the network Direct Sequence Spread Spectrum DSSS generates a redundant bit pattern for each bit to be transmitted This bit pattern is called a chip or chipping code The longer the chip the greater the probability that the original data can be recovered Even if one or more bits in the chip are damaged during transmission statistical techniques embedded in the radio can recover the original data without the need for retransmission To an unintended receiver DSSS appears as low power wideband noise and is rejected ignored by most narrowband receivers An IP address that is assigned automatically to a client station in a TCP IP network by a DHCP server NP642 IEEE 802 11g PCI Adapter 27 YML785 Revi MILI Encrypti
23. tional AP operating modes offered by 54mpbs Access Point which allows a pair of APs to act as the bridge that connects two Ethernet networks or Ethernet enabled clients together NP642 IEEE 802 11g PCI Adapter 31 YML785 Rev1 MAIL APPENDIX B Registration and Warranty Information All NetComm Limited NetComm products have a standard 12 month warranty from date of purchase against defects in manufacturing and that the products will operate in accordance with the specifications outlined in the User Guide However some products have an extended warranty option please refer to your packaging To be eligible for the extended warranty you must supply the requested warranty information to NetComm within 30 days of the original purchase by registering on line via the NetComm web site at www netcomm com au Contact Information If you have any technical difficulties with your product please do not hesitate to contact NetComm s Customer Support Department Email support netcomm com au Fax 612 9424 2010 Web www netcomm com au Copyright Information This manual is copyright Apart from any fair dealing for the purposes of private study research criticism or review as permitted under the Copyright Act no part may be reproduced stored in a retrieval system or transmitted in any form by any means be it electronic mechanical recording or otherwise without the prior written permission of NetComm Limited NetComm Limited accep
24. ts no liability or responsibility for consequences arising from the use of this product Please note that the images used in this document may vary slightly from those of the actual product Specifications are accurate at the time of the preparation of this document but are subject to change without notice NetComm Limited reserves the right to change the specifications and operating details of this product without notice NetComm is a registered trademark of NetComm Limited All other trademarks are acknowledged the property of their respective owners 32 NP642 IEEE 802 11g PCI Adapter YML785 Revi MALUI Customer Information ACA Australian Communications Authority requires you to be aware of the following information and warnings 1 This unit shall be connected to the Telecommunication Network through a line cord which meets the 2 requirements of the ACA TS008 Standard This equipment has been tested and found to comply with the Standards for C Tick and or A Tick as set by the ACA These standards are designed to provide reasonable protection against harmful interference in a residential installation This equipment generates uses and can radiate radio noise and if not installed and used in accordance with the instructions detailed within this manual may cause interference to radio communications However there is no guarantee that interference will not occur with the installation of this product in your home or office If this eq
25. uipment does cause some degree of interference to radio or television reception which can be determined by turning the equipment off and on we encourage the user to try to correct the interference by one or more of the following measures Change the direction or relocate the receiving antenna ncrease the separation between this equipment and the receiver Connect the equipment to an alternate power outlet on a different power circuit from that to which the receiver TV is connected Consult an experienced radio TV technician for help 3 The power supply that is provided with this unit is only intended for use with this product Do not use this power supply with any other product or do not use any other power supply that is not approved for use with this product by NetComm Failure to do so may cause damage to this product fire or result in personal injury NP642 IEEE 802 11g PCI Adapter 33 YML785 Rev1 Melton Product Warranty The warranty is granted on the following conditions 1 2 3 This warranty extends to the original purchaser you and is not transferable This warranty shall not apply to software programs batteries power supplies cables or other acces sories supplied in or with the product The customer complies with all of the terms of any relevant agreement with NetComm and any other reasonable requirements of NetComm including producing such evidence of purchase as NetComm may require The cost
26. ware of each other RTS CTS mechanism can solve this Hidden Node Problem If the packet size is smaller than the preset RTS Threshold size the RTS CTS mechanism will NOT be enabled Service Set Identifier which is a unique name shared among all clients and nodes in a wireless network The SSID must be identical for each clients and nodes in the wireless network NP642 IEEE 802 11g PCI Adapter YML785 Revi Subnet Mask TCP IP Throughput WEP Wireless Bridge NEICOMM The method used for splitting IP networks into a series of sub groups or subnets The mask is a binary pattern that is matched up with the IP address to turn part of the host ID address field into a field for subnets Transmission Control Protocol Internet Protocol The basic communication language or protocol of the Internet It can also be used as a communications protocol in a private network i e intranet or internet When you are set up with direct access to the Internet your computer is provided with a copy of the TCP IP program just as every other computer that you may send messages to or get information from also has a copy of TCP IP The amount of data transferred successfully from one point to another in a given period of time Wired Equivalent Privacy WEP is an encryption scheme used to protect wireless data communication To enable the icon will prevent other stations without the same WEP key from linking with the AP One of the addi
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